TIAGO TIGOR BSVI - SERVICE MANUAL - DTC 24-12-2021

TATA BSVI Gasoline Program – EMS ECU Bosch DTC Troubleshooting Service Manual Version: 1.2 Date: 18-12-2019 Prepared By: Sunita Mandlik Checked By: Yeshwant Jadhav Approved By: Satish Kumar Document Part No: 2921 02 xxx xxxx Page: 1065 of 1498 Copyright © TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. Troubleshooting Steps: Step Checks IF YES IF NO 1. Short Circuit between CAN_H(132)to Vbatt Rectify the wiring harness Go to next step 2 Short Circuit between CAN_H(132)to GND, Rectify the wiring harness Go to next step 3 Short Circuit between CAN_L(144)to Vbatt Rectify the wiring harness Go to next step 4 Short Circuit between CAN_L(144)to GND, Rectify the wiring harness Go to next step 6 Check the resistance between pin 132 & pin 144 of the vehicle connector it should be approximately 60 ohms Go to next step Check for terminal back out of the wiring harness at ECU & instrument cluster CAN wire 7 If fault still persists Replace EMS ECU Repeat above procedure for reconfirmation Trouble Shooting:- U0001-88:- Vehicle Communication Bus A - short circuit Start Read DTC in ECM. This DTC will be in history. Clear DTC End